a turn he pilots say deliberate without nefarious, you're investigating something like this. they get say you had your fbi hat on again. how would that change your calculus most likely explanation as to why the plane disappeared? >> i don't know that it would change anything. so many contradictory statements. now we're going on two weeks and can't tell if the plane turned, in the hands of the pilot or autopilot. now they are saying it wasn't preprogrammed when they never knew for sure it was. i think as long as these conflicting statements come out as to when systems were turned on or off. whether the pilot was in control or not in control, it really makes it difficult -- >> criminal investigators aren't trying to determine at this point. they want to keep gathering all the possible facts in spite of the fact the aspects of facts concerning the airplane are changing. >> thanks very much, tom. you make a good point.